diff --git a/build.sbt b/build.sbt
index 14867c049..5eba2298d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1491,7 +1491,6 @@ lazy val lmCoursier = project
     Mima.lmCoursierFilters,
     lmCoursierDependencies,
     Compile / sourceGenerators += Utils.dataclassGen(lmCoursierDefinitions).taskValue,
-    Compile / scalacOptions --= Seq("-Xfatal-warnings"),
   )
   .dependsOn(
     // We depend on lmIvy rather than just lmCore to handle the ModuleDescriptor
@@ -1508,7 +1507,6 @@ lazy val lmCoursierShaded = project
     Mima.lmCoursierFilters,
     Mima.lmCoursierShadedFilters,
     Compile / sources := (lmCoursier / Compile / sources).value,
-    Compile / scalacOptions --= Seq("-Xfatal-warnings"),
     lmCoursierDependencies,
     autoScalaLibrary := false,
     libraryDependencies ++= Seq(
diff --git a/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala b/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
index 3d0d67b4f..7ee3d5184 100644
--- a/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
+++ b/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
@@ -1,7 +1,7 @@
 package lmcoursier
 
 import java.io.File
-import java.net.{ URL, URLClassLoader }
+import java.net.{ URI, URLClassLoader }
 
 import coursier.{ Organization, Resolution }
 import coursier.core.{ Classifier, Configuration }
@@ -55,7 +55,7 @@ class CoursierDependencyResolution(
     val conf0 = protocolHandlerConfiguration.getOrElse(conf)
 
     def isUnknownProtocol(rawURL: String): Boolean = {
-      Try(new URL(rawURL)) match {
+      Try(new URI(rawURL).toURL) match {
         case Failure(ex) if ex.getMessage.startsWith("unknown protocol: ") => true
         case _                                                             => false
       }
diff --git a/lm-coursier/src/main/scala/lmcoursier/syntax/package.scala b/lm-coursier/src/main/scala/lmcoursier/syntax/package.scala
index bec5a6710..83ce566eb 100644
--- a/lm-coursier/src/main/scala/lmcoursier/syntax/package.scala
+++ b/lm-coursier/src/main/scala/lmcoursier/syntax/package.scala
@@ -101,8 +101,6 @@ package object syntax {
         followHttpToHttpsRedirections: Boolean
     ): CoursierConfiguration =
       value.withFollowHttpToHttpsRedirections(Some(followHttpToHttpsRedirections))
-    def withFollowHttpToHttpsRedirections(): CoursierConfiguration =
-      value.withFollowHttpToHttpsRedirections(Some(true))
     def withStrict(strict: Strict): CoursierConfiguration =
       value.withStrict(Some(strict))
     def withTtl(ttl: Duration): CoursierConfiguration =